Metallic weather strip



May l, i15928.

D. M. DUNNING, JR

METALLIC WEATHER STRIP Filed March l5., 1925 il" alenleu lvl] l., AUQU DAVID M. DUNNING, JR.,

PATENT GFFICE..

F AUBURN, NEW ZOB/K.

METALLIC WEATHER STRIP.

Application led March 13, 1926.

rThis invention relates to metallic weatherstrips and particularly to those weatherstrips which are formed to provide a projecting bead designed to be engaged in a groove plowed in the side rails of a window.

It is a well known fact that few windows which have been in use for any length of time remain perfectly true and straight. The rails of the sash are generally warped l0 outward near the middle and there is con siderable shrinkage. TWhile this shrinkage may be compensated for by the addition of ordinary weather-strip material to the jamb of the window, no close adjustment T5 can be made by this method without considerable difiiculty and expense.

The warped or bowed condition, however, is much more difficult to overcome and it is rarely corrected due to the fact that ordi- 2'0 nary weather-strip material is made straight and rigid and is, of course, so disposed against the jamb, while the mechanic, in plowing the groove in the side face of the 'Sash rail, follows the face of the sash rail as a guide, which results in a groove which is slightly curved from end to end. Obviously,

it is impossible for a curved rigid groove to engage properly with a straight rigid rib or bead and even though this curve be relatively slight there is enough to cause the window to bind or else the cross section of the groove has to be made so much larger than the cross section of the rib or bead that there is considerable leakage of air between these two coacting members and the object of the weather-strip is defeated.

Another dificulty with the ordinary weather-strip is that when once fastened in place it is difficult to remove and since the sash cannot be removed without removing the weather-strip much of the objection to weather-strips in general comes from mechanics who have occasion to remove a window sash for the purpose of repairing cords, glass, etc.

Furthermore, weather-strips of the character described are ordinarily nailed to the jambs in a rigid position and not capable of easy adjustment and in order to remove the sash it is necessary that these nails be first withdrawn and, as the sash must slide over these nail heads and if a nail works loose it will dig into and damage the sash, it is customary to use coated nails with very thin heads and such nails cannot be withdrawn but must be driven through the metal Serial No. 94,508.

with a punch and left buried in the wood.

With these objectionable features in view, the general object of my invention is to pron vide a ribbed or beaded type of weatherstrip .which has a certain amount of flexibility and adjustability and is readily removed, which is simple to manufacture and thoroughly effective in operation.

A further object is to provide a weatherstrip of this character which includes a channel member of thin metal adapted to be applied against the face of the jamb and attached thereto and provide a weather-strip proper having a bead adapted to be disposed in the groove plowed in the rail of the window sash and which has laterally extending Hanges operating within the retainer and having a certain amount of sliding movement therein and a certain amount of lateral movement.

A still further object is to so construct this weather-strip that it will have a certain degree of flexibility so that the bead may be flexed where the groove in the edge face of the sash rail is bowed.

Another object is to provide means whereby the window sash may be readily removed from the jamb without the necessity of removing the retainer from the amb, it being only necessary to remove thestrip proper from its engagement with the retainer.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings wherein Figure l is a perspective view of a portion of a window frame and sash having my weatherstrip applied thereto;

Fig. 2 is a cross sectional view through a portion of the window frame and the Weatherstrip, the sash being shown in section; j

Fig. 8 is a face view of the upper portion of the retainer;

Fig. 4 is a section on the line 4-4 of Figure 3;

Fig. 5 is a section-on the line 5 5 of Figure 3;

Fig. 6 is a face view of the weather-strip proper.

Referring to these drawings it will be seen that the retainer which forms the base, as it may be termed, 0f the weather-strip is made of relatively thin sheet metal and has the form of an elongated strip 10, the lateral edges of which are bent inward toward the middle line ol the retainer as at 11, to thereby 'form opposed inwardly directed flanges. rl'his retainer 10 has a length slightly greater than the sash with which it is designed to coact. Disposed within the retainer is the weather-strip proper which as illustrated in Figure (3, consists of a strip ot' thin metal bent upon itself to lorm the medially disposed hollow bead 12 and the laterally projecting4 flanges 13. This bead is preferably, though not necessarily. iflled with packing 1l.

It will be noted that: the width ot the weather-strip proper at its base is less than the width ot the retainer 1t) between its flanges 11 and that the opening between the confrontingY ede'es ot' these llanges .l1 is greater than the width olf the rib .so that the weather-strip proper may shit't laterally within its base or retainer. This is a very important feature ot my inrention.

Preferably, and tor the purpose ot giving Hexibility to the weather-ramp, the ilanges 13 are formed at interval-f with inwardlyv projecting notches or slit:y l5, these notches or slits being arranged in alternate relation or in staggered relation on opposite nmrgins of the tlanges 13.

rfl'he channel member 10 or retainer at intervals is formed with depressed portions 16 acting as countersinlis `l'or the. reception ot the headed screws 1T which hohl the. channel member in place. VPreferably. and i'or the purpose ot formingr a stop which will limit or preventy anyv relative slidini:Y morement of the w amber-strip proper within the retainer, l slity the llanges 11 adjacent the upper end of the retainer as at'. 15, and (lepress these llanges above these slits as at 11-, which can be readily accomplished by means of a screw driver or other suitable tool.

For the sill ot the window or tor the head of the window- I provide a weather-strip consisting of a metal plate or strip 1t) having an outwardly protuberant bead 20, haring an inner lilling Q1. This weather-strip 19 is to be attached permanently to the sill or to the head.

I have found that a much better seal is secured between the trame and the weatherstrip if the hollow bead or rib be illed with n. felt, packing. rhis packing should be made slightly deeper than the hollow rib .so that. the packing is pressed and l'orms a tight` joint ot` contact. This packing not only aids in holding' the rib trom distortion buty it also contacts with the channel or base member 10 and thus prevents any possibility of rattling. l do not wish to be limited to the use ot this packing or tilling 11- in combination with the lateral weather-strips as this may also be used in conjunction with the head or sill weather-strip 19, as shown in Figure l.

Preferably the channel member l() is transversely curved as illustrated in Figure 52, so as to secure a good contactwith the jamb and so that as the screws 1T are forced inward this bowed strip will lleX and the margin.:y will be forced in a tight, engagement with the jamb.

'.l'o assemble this weather-trip, the channel or retainer is placed on the iamb and abruti-d against the partinpr st rip, and is held in place by the screws 1T or other fasteners. '.l`he sash ran then be plaeed in position and the ribbed or beaded strip l2 inserted in the retainer and in the corresponding `groove which has been plowed in the saLh. rIlle weather strip can then be pushed into its proper position. rl`he notches 1f in the base of the weather-strip proper permity a certain amount ot' llexibility in this member sutlicient to allow its being placed in ordinary double hun; windows where the length of the sash is more than one-haltl o1l the window opening, preferably the weather-strip should be made ol v`heet metal such as brass, bronze. aluminum or Zinc, but itI is obvious that other materials might be used and l do not wish to be limited to any specific mate rial for this purpose.

lt will be seen that when the window sash is raised or lowered the groove c in the sash Vl". moves along the protrut'tineV rib or bead 12 and the tlanges 13 are tree to move tran rersely in the retainer, thus compensating l'or any irregularities in the sash groove e while at the same time air tight joints are secured between the groove c and the bead or rib l! and also between the llanges lil and the retainer. ln cases where tbe groove c has become cui-red in the warping,r ol' the sash, the protruding4 rib or bead l2, by rearon ol' thtI 'l'aetthat there base flanges are notched, will bend Vith .slight resistanee and contorni to the groove in the sash. l do not wish to be limited to the use of notchesl l5 in the llanpes ll as the same purpose can be accomplished by formino; the weatherstrip proper conf` ing ol' the bead 12 and the ilanges lil ol' a plurality ol.' sections which may be sinnpily batted together in place. lt is not believed this requires illustration. Other means might be used lor securing; this result. within the scope ol' my invention as defined by the appended claims.

To remove the weather-.strip it. is onlv necessasry to open the liaupges ll"L and willidraw the ribbed` member. The sash is then free to be remorid l'rom the casino' in the usual manne' and may be removed and rcplaced without disturbing the. retainer.

llhile l, have illusir: ted this` device as ap plied to a lower sash it will be understood that it is also adapted to he applied to an upper sash and that it may be applied to anyT sliding elementy other than a window where the use of weather-stripping is required.

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l. A weather-strip for application to the side edges of sliding window sashes comprising a channel-shaped retainer and a strip having a medial outwardly projecting rib and engaged with said retainer, the ribbed strip having lateral movement within the channel of the retainer, and being formed to have longitudinal flexibility.

2. A weather-strip for application to sliding windows comprising a longitudinally extending retainer and a weather-strip proper formed to provide a medially disposed rib extending at right angles to the face of the retainer, the retainer and weather-strip being formed to have sliding engagement with each other, and means on the retainer normally preventing said sliding movement of the weather-strip with relation to the retainer but shiftable from its normal position to permit the withdrawal of the weather-strip from the retainer.

3. A weather-strip for application to sliding windows comprising a longitudinally extending metal strip having inwardly turned lateral flanges and a weather-strip proper formed to provide a medially disposed rib, and laterally extending base flanges at right angles to the rib and disposed beneath the flanges of the retainer, the ribbed strip having lateral movement within said retainer and being formed to have longitudinal flexibility, and means at one end of the retainer preventing accidental longitudinal sliding movement of the weather-strip proper from its engagement with the retainer.

4. A weather-strip for applicationto the side edges of sliding window sashes comprising a retainer formed of a longitudinally extending strip of metal having its lateral margins turned inward to form lateral flanges, and a weathenstrip proper having a medial hollow rib extending at right angles to the flanges and the rib and lateral flanges, the rib and flanges being formed from asingle strip of metal, the base flanges of the weather-strip having a width less than the channel of the retainer and the rib at its junction with the flanges being less in width than the distance between the flanges of the retainer whereby said weather-strip proper may have lateral movement, the lateral flanges of the weather-strip proper having inwardly extending slits at intervals to se- Cure longitudinal flexibility of the weatherstrip proper.

5. A weather-strip formed of a strip of metal bent along a medial line to form an outstanding hollow rib, and a yielding filling disposed within said hollow rib and terminating at the base of said rib.

6. A weather-strip formed of a strip of metal bent along a medial line to f orm an outstanding hollow rib, and a yielding tilling disposed within the rib consisting of a layer of felt, the layer terminating approxi mately flush with the outer surface of the lateral flanges.

7; A weather-strip consisting of a strip for the side edges of sliding window sashes of metal bent along a medial line to provide an outwardly projecting hollow rib and laterally projecting flanges, the lateral margins of the flanges being slit at intervals to secure longitudinal flexibility of the weatherstrip.

8. A weather-strip for application to the side edges of sliding windows comprising a retainer formed of a strip of metal having its side margins inwardly turned to form guiding flanges, the strip having apertures at intervals for the passage of fastening devices whereby the strip may be held to a window casing,` and a weather-strip proper having a medially disposed rib `and laterally projecting flanges disposed beneath the flanges of the retainer, one end of the retainer being formed to normally prevent the withdrawal of the weather-strip proper from the retainer.

9. The combination with a window frame and a sash slidingly engaging the same and having a longitudinally extending groove, of a weather-strip comprising a retainer attached to the frame and consisting of a longitudinally extending strip of metal, and a weather-strip proper having an outwardly extending medial rib slidingly engaging the groove in the side of the sash and slidingly engaging the retainer, the weather-strip having lateral movement with reference to the retainer, said weather-strip being transversely slitted at intervals to thereby secure flexibility for the strip.

10. The combination with a window frame and a sash 'sliding therein and having a longitudinally extending groove confrontingI the frame, of a weather-strip for application thereto comprising a retainer consisting of a longitudinally lextending strip of metal attached to the frame, and a weather-strip proper slidingly engaging the retainer and having a longitudinal outwardly extending rib slidingly engaging the groove in the sash, and means at one end of the retainer normally preventing longitudinal sliding movement of the weather-strip with relation to the retainer but shiftable to permit the weather-strip to be slid out of the retainer and out of the sash groove.

11. A weather-strip of the character 'described comprising a retainer formed of a strip of metal and having its side margins inwardly turned to form guiding flanges, the strip being transversely bowed and having apertures at intervals for the passage of fastening devices through the middle of the strip whereby the strip may be held to a window casing with its side margins bearing tightly against the window easing, and a weather-strip proper having a medially disposed rib and laterally projecting langes disposed beneath the Hanges of the retainer, the rib being;r narrower than the distancehetween the edges ot said retainer flanges and the weather-Strip proper having a Wicltlrless than the width of the retainer whereby the Weather-Strip proper ma)v shift laterally7 in either direction, one end of the retainer 10 having' means to normally prevent the Withdrawal of the Weather-Strip proper from the retainer to permit said Withdrawal when it is desired to ren'iove the sash from the Window.

In testimony whereof l hereunto atlix my Signature.

DAVID M. DUNING, JR. 

